Active graphene composite electrode material

A graphene composite and electrode material technology, applied in hybrid capacitor electrodes, battery electrodes, circuits, etc., can solve the problems of graphene performance advantages that cannot be exerted, easy to agglomerate, etc., and achieves simple preparation process, easy to scale, and multi-diffusion. Effects of Channels and Storage Spaces
CN103824701AActive Publication Date: 2014-05-28CHINA FIRST AUTOMOBILE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA FIRST AUTOMOBILE
Publication Date
2014-05-28

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Abstract

The invention relates to an active graphene composite electrode material. The active graphene composite electrode material is characterized in that active carbon particles are uniformly distributed between the surface and the sheet layer of provided or prepared active graphene; the weight percent of the active graphene in the composite electrode material is 5-90%; when the weight percent of the active graphene is lower than 30%, a third component which is not more than 10% of the total mass of the composite electrode material is added. The adopted active graphene and active carbon are of similar structures, and the active carbon can be prepared through methods of physical activation, chemical activation and physical and chemical combined activation. A porous structure of carbon is formed through gas action in the physical activation method, and a porous structure of carbon is formed through certain chemical reagent action in the chemical method, thus the specific surface area of carbon material is greatly improved. The specific surface area is greatly increased, so that more diffusion paths can be provided for ion transmission.
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Description

technical field

[0001] The invention relates to an active graphene composite electrode material, which belongs to new energy graphene materials. Background technique

[0002] Hybrid vehicles, pure electric vehicles, fuel cell vehicles and other energy-saving and new energy vehicles are the direction of automobile development. Power battery, motor and electronic control are the three core parts. Among them, the power battery is the most restrictive factor to the development of energy saving and new energy vehicles. Currently used power batteries have low energy density, large weight and volume, short service life, high cost, narrow operating temperature range, and long charging time. In order to improve these adverse effects, people start research and development of power battery technology from material technology.

[0003] Graphene is a new type of two-dimensional carbon nanomaterial, which is expected to be widely used in the field of batteries. The Chinese patent with...

Claims

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